42856 has 16 divisors (see below), whose sum is σ = 87840. Its totient is φ = 19440.

The previous prime is 42853. The next prime is 42859. The reversal of 42856 is 65824.

42856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42853) and next prime (42859).

It is a plaindrome in base 13.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 42856.

It is not an unprimeable number, because it can be changed into a prime (42853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156 + ... + 331.

It is an arithmetic number, because the mean of its divisors is an integer number (5490).

2⁴²⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

42856 is an abundant number, since it is smaller than the sum of its proper divisors (44984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43920).

42856 is a wasteful number, since it uses less digits than its factorization.

42856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 500 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 42856 is about 207.0169075221. The cubic root of 42856 is about 34.9948291681.

It can be divided in two parts, 428 and 56, that added together give a palindrome (484).

The spelling of 42856 in words is "forty-two thousand, eight hundred fifty-six".